Machine for feeding paper to printing-presses



H. W.- DIGKINSON. PAPER FEEDER FOR PRINTING PRESSES N0:

Patented Ont. 30, 1855.

UNITED STATES PATENT clarion. I,

HENRY W. DICKINSON, OF ROCHESTER, NEW YORK, ASSIGNOR TO L. B. SWAN, OFLOWELL, MASSACHUSETTS.

' MACHINE FOR FEEDING PAPER T'O PRINTING-PRESSES.

Specification of Letters Patent No. 13,737, dated October 30, 1855.

To allwhom 'it may concern:

Be it known that I, HENRY WV. DICKIN- SON, of Rochester, in the countyof Monroe and State of New York, have invented a new and usefulImprovement on Paper- Feeders of PrintingPresses; and I do herebydeclare that the following is a full and exact description of theconstruction and operation of the same, reference being had to theaccompanying drawings, making a part of this specification, in which-Figure 1, is a side elevation, showing the air chambers A, pump B, armC, connecting rod D, arm E, the end of the rock-shaft F, connecting rodG, gearing H, and the devices for raising the bank table. Fig. 2, is aplan of the top of the machine, showing the transit-frame I, valvecylinders J, ad justing bars K, stops L, and the stops M, &c. Fig. 8,shows the side of the air chamber and pump next to the frame, with thecylinders J, and adjusting bar K, attached. Fig. 4, is a longitudinalsection of the pump and piston.

The nature of my invention consists in the construction of areciprocating transit frame to be applied to the ordinary printingpresses for the purpose of feeding the paper, by means of atmosphericpressure, so as to avoid the necessity of manual assistants for thatpurpose.

To apply my invention to ordinary presses, it is only necessary to fix apair of ways N, Fig. 2, to the sides of the press frame, for the transitframe I, to move upon. Said ways should be about the length of the pressframe, and at one end of them is the stops L, and at the other, thestops M, which strike the end of the adjusting bars K.

I use a common air pump B, to exhaust the air chambers A, which shouldbe of equal capacity with the chambers, in order that each outwardstroke of the piston P, may fully exhaust them. They should each beabout two inches in diameter, and three and a half feet long. They maybe attached to the under side of the chambers, as seen, in Figs. 1, and3, and move with them, the pistons being fixed to the press frame at 0,Figs. 1, and 2. The piston valve is constructed as seen at S, Fig. A,and the pump valve, as seen at T, Figs. 4 and 5. The valves in thecylinders J, are constructed as shown at c, Fig. 6, with a catchconnecting the valve with the end of the pistons a, the other end ofthem being attached to the adjusting bars K. The valves may all be madeeither of leather or gut-ta-percha. From each of the valve cylinders J,there is a tube leading down through the transit frame I, to the paper.Said frame I, is constructed as seen in Fig. 2, of any suitablematerial, either tubular, or solid, and it is moved to and from thebank, by the rock-shaft F, by connecting the arm C, of the air-chambersto the arms E, of said rock-shaft F, by the connecting rods D.- Therock-shaft F, connecting rod G, and the gearing H, are already in thepresses. The screw 6, on each side is attached to the press frame at thetop and bottom, as seen in Fig. 1, and passes through the nut at thelower end of the hanger Y, which is formed of two threaded pinions. Theyare kept from turning when the table is to be fed up, by a key betweenthem and the hanger Y. Said hanger 1s fixed to the bank-table W, seen inFig. 2. There is a ratchet wheel (Z, on each of the screws 6, which areworked by the pawls f, of the rock-shaft g. The end of the air chamberat each oscillation, strikes the arm h, of said rock-shaft, therebygiving a partial turn to the screws 6, which raises the banktableaccording to the thickness of each sheet of paper. It may be foundexpedient to have but one orifice into the air chamber and run a tubefrom that to each of the openings through the transit frame. The paperis placed upon the table W, Fig. 2, and one oscillation given to thetransit frame to produce the exhaustion. As the frame moves back fromright to left, of Figs. 1, and 2, the stops L, strike the adjusting barsK, which opens the valves 0, when the suction from the exhaustedchambers A, causes the sheet to adhere to the orifices of thetransit-frame I, which immediately returns to the other end, the stopsM, strike the adjusting bars moving them back so as to close the valves0, when the sheet is delivered to the nippers on the frisket frame ofthe press. This forward motion of the transit frame also re'e'hausts thechambers.

What I claim as my invention and desire to secure by Letters Patent, is

The general arrangement of the devices as above described and for thepurpose set forth.

HENRY W. DICKINSON.

Witnesses:

WM. S. LoUoHBoRoUGH, D. BROOKS.

